{
  "manageEntity": {
    "action": "Save",
    "entityId": "95999",
    "entityType": "Track",
    "nonce": "0x29a67695538c7c4ed1e9a859eb4bd740ac214f2f83085dabfdcb3388fab5bf92",
    "signature": "0xd0d940062ba822cd1cb5be8f396996a61204b0461e186a55ce6d407653fbbc03660da946f735af23cca8de2b441de6c679d0abda4483fbe859b2dc6cde9014661c",
    "signer": "0x44577d90A171E208f723dEEa39019067c9Dd87E8",
    "userId": "853591809"
  }
}